Napping  after learning something new could help improve your memory...as long as you dream, scientists say. They found people who dream about a new task do it better on waking than those who do not sleep or do not dream. Volunteers were asked to learn the layout  of a 3D computer maze  so they could find their way several hours later. Those allowed to take a nap and who also remembered dreaming of the task, found their way to a landmark   quicker. The researchers think the dreams are a sign that unconscious  parts of the brain are working hard to process information about the task. Dr. Robert Stickgold of Harvard Medical School, said dreams may be a marker that the brain is working on the same problem at many levels. Study tips Co-author Dr. Erin Wamsley said the study suggests our non-conscious brain works on the things that it deem   are the most important. "Every day we are gathering lots of information and new experiences," she said. "It would seem that our dreams are asking the question, "How do I use this information to inform  my life?" The scientists say there may be ways to use this phenomenon for improving learning and memory. For example, students might be better studying hard before bedtime, or taking a nap after a period of afternoon study. Scientists say  _   could help improve your memory. A) dream B) nap C) nap and dream D) nap without dream
C
Before you can start speaking and writing in English, your brain must get enough correct English sentences. This is obvious . There are two ways to get correct English sentences: listening and reading. Both are good, but reading is much easier than listening. With the help of a good dictionary, you will be able to understand English texts much more easily than movies. If you just read one book in English, you will see that your English has become much better. English phrases will just come to you without thinking when you are writing or speaking. This is true for hundreds of words and grammar structures . If you read in English, you can forget about grammar rules. Throw away your grammar book! You needn't know the rules for the present perfect tense . Instead, read a few books in English, and soon you will feel that "I have seen Paul yesterday" is wrong. The only difference between you and native speakers is that they have heard and read more English sentences than you have. The only difference between you and native speakers is that native speakers   _  . A) have parents as their English teachers B) are born to know grammar rules and phrases C) read and hear more English than you D) have a gift in learning English
C
Q: We all know that Taiwan is considered as Treasure Island 0f China. The scenery there is very beautiful. Recently we have been connected closely each other. Several months ago, a group of 19 Taiwanese children flew to Chengdu in order to begin a tour to study pandas. The middle school children were from Chiayi Country in southwest Taiwan and were chosen because of their excellent performance at school. During the visit, the children saw pandas up close. They were excited to see so many pandas at the same time. The children also traveled to the Mount E'mei scenic area and met local schoolchildren. At last, they said, "The pandas are very cute, and they are all happy." They also said the children in Chengdu are very friendly to them, and they all like there. They hope to visit Sichuan again. This passage mainly expresses that   _   . A) the middle school students in Taiwan must can learn about pandas B) there is a good relationship between Taiwan and the mainland China C) the children in Chengdu are very friendly D) the students in Taiwan are excellent
A: B
Question: Mr and Mrs Smith come from America. They teach English in Yangzhou. They like their jobs. They have a son, Tom and a daughter, Mary. They are all in China now. Mr Smith can speak Chinese. He likes swimming and singing. Mrs Smith likes swimming and running. Tom and Mary like playing chess. They often play games with Chinese boys and girls. Mr and Mrs Smith like Chinese food very much, but Tom and Mary don't like it. They like French fries and hamburgers. Mrs Smith wants them to eat more vegetables and fruit. One day, Mrs Smith cooks some vegetables for them. Tom sees them and says, " I am full ." And Mary says, "I have something to do." And she runs away. Why don't Tom and Mary eat the vegetables Mrs Smith cooks one day? A) Because they don't like them. B) Because they like Chinese food. C) Because they are full. D) Because they are busy.
Answer: A
*Question*
Hundreds of years ago, life was much harder than it is today. People didn't have modern machines. Life today has brought new problems. One of the biggest is pollution. Water pollution has made our rivers and lakes dirty. It kills our fish and pollutes our drinking water. Noise pollution makes us talk louder and become angry more easily. Air pollution is the most serious kind of pollution. It's bad to all living things in the world. Polluted air from cars, planes and factories is so thick that it is like a quilt  over a city. This kind of quilt is called smog . Many countries are making rules to fight pollution. Factories must now clean their water before it is thrown away. And they mustn't blow dirty smoke into the air. We need to do many other things. We can put waste things in the dustbin and not throw it on the ground. We can go to work by bus or with our friends in the same car. If there are fewer people driving, there will be less pollution. The most serious kind of pollution is   _  . A) noise pollution B) air pollution C) water pollution D) waste paper
**Answer**
B
Q: In the 1500s, South American fishermen said that the sea became warmer every few years. They gave this special event a Spanish name 'El Nino', meaning 'the baby'. It is called 'the baby' because it arrives around Christmas. El Nino is a huge area of warm water in the middle of cold water in the Pacific Ocean. It happens every two to seven years. It moves around the ocean and becomes bigger and smaller at different times. This warm water affects the weather. It is always raining over El Nino. El Nino contains a lot of energy. Scientists think this energy is formed when wind comes from the northern half of the world. The winds blow across warm sea water in the south. When the strong wind hits the warm water, violent weather happens. Scientists think that El Nino existed for many thousands of years. El Nino affects every person in the world because it affects the entire world's weather. It can bring the rain that farmers need. It can bring storms that destroy homes. It can mean that fishermen cannot catch fish, and it can bring floods. There is nothing we can do about El Nino. It is an event of nature. We can help the world's weather by trying to stop the greenhouse effect and air pollution. The most important job for scientists is to learn how to predict when El Nino is going to bring dangerous weather. Then, people can try to prepare for storms, floods and droughts. New technology like satellite pictures and temperature measuring equipment can help. Still, it is very hard to say when or where El Nino will cause damage. It happens   _  . A) every year B) every month C) every seven years D) every two to seven years

A: D